Welcome to On Top Roofing, your trusted roofing experts in Lanark, Ontario, proudly serving Perth and the surrounding areas for over 25 years. With our extensive experience in the industry, we understand the value of great service and the importance of a reliable roof for your home. As homeowners ourselves, we recognize that families entrust us with their most significant investment, and we are committed to providing top-quality craftsmanship and exceptional customer care.